Astronomy

The Antares 1.25" Cheshire collimating eyepiece is an essential alignment tool for keeping your Newtonian reflector performing at its best. By comb...

Sub angstrom H-alpha systems have long been cost prohibitive for the amateur. Designs other than the Coronado are difficult to use because of tempe...

Reveal the faint detail of planetary and emission nebulae with the Celestron Oxygen III (OIII) narrowband filter. This 2" filter isolates the doubl...

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See the universe with both eyes. The Celestron Stereo Binocular Viewer lets you adapt two eyepieces to your telescope and observe with both eyes at...

The Antares 45° Erecting Prism uses an Amici prism design to deliver a fully corrected image that is upright and correct from left to right. Viewin...

The Celestron X-Cel LX 2x Barlow Lens doubles the magnification of all your 1.25" eyepieces while preserving sharp, high-contrast, color-accurate v...

Step up your visual and imaging experience with the Antares 2" Dielectric Mirror Diagonal for SCT telescopes. Its multi-layer dielectric coating de...

Keep your hands free and your night vision intact with the Antares Dualbeam Flashlight. This multipurpose astronomy light switches instantly betwee...

The Celestron Omni series Plössl eyepieces deliver crisp, high-contrast views at an affordable price. Built around a premium 4-element symmetrical ...

The Antares 90° Star Diagonal lets you view objects at a 90° angle from where the telescope is pointing, for comfortable observing when the scope i...

Reveal the faint detail of planetary and emission nebulae with the Celestron Oxygen III (OIII) narrowband filter. This 1.25" filter isolates the do...

Extra plate for your TELRAD. Very useful for using on a second telescope without having to buy an extra finder!

The Celestron Reducer/Corrector is a combination focal reducer and field corrector that transforms your Schmidt-Cassegrain telescope into a faster,...

The Celestron Luminos 2.5x Barlow Lens is a premium accessory that increases the magnification of your 2" and 1.25" eyepieces by 2.5 times. Its 4-e...

These Riser Bases will position the Telrad Reflex Sight to a higher position off the telescope tube assembly to clear obstructions on the tube asse...

TeleVue Delos eyepieces set the standard for comfortable, immersive observing. Building on the legendary Ethos design, each Delos delivers a tack-s...

Combination camera adapter for 1.25" that allows for both direct and eyepiece projection photography. Threaded for filters.

The smc PENTAX XW series is a line of premium wide-angle eyepieces for astronomical telescopes and large spotting scopes, available in focal length...